90 suburban miss' at cruise but notat idle

SOURCE: i have a 93 1500 silverado with a 350 5.7L tbi.

try pullingthe vac. line ofthe fuel regulator plug the hose then try it if it runs ok then replace the fuel regulator.

SOURCE: 1990 chevy 1500 4X4 5.7L

With that kind of symptoms you should be displaying a check engine light have the codes extracted and get back to me let me know what codes and I will give you a better idea of what is wrong with your vehicle.

SOURCE: 2002 4.3 vortex chevy got a rough idle but smooths

Check the distributor gear. Is it a random misfire code? I am fighting this issue myself. My truck eats up the distributor gear and I get random misfire codes and Cam to Crank positioning sensor codes, all related to timing issues.

SOURCE: 97 k1500 5.7 liter vortec misses on cylinders 3

I have had continuous missing issues on my 1997 Silverado after i had a new engine installed 30,000 miles ago. Today I purchased a new gasket for the EGR Valve and removed it. The mechanic had re-used the old gasket when he replaced the engine and cut corners to save $2.00. I found he had installed the EGR bass-ackwards causing my check engine light to stay on and the engine always to miss. Engine runs GREAT now

SOURCE: my 99 suburban has a jerking feeling when i barely

Mine was a crank shaft sensor located by the distributor.If u have a parts house that run free diagnostics it can tell u.